| 摘要 |
<p>The invention relates to a method for the continuous or discontinuous extraction of a metal, or of multiple metals from a slag containing the metal, or a compound of the metal, wherein the liquefied metal containing slag is heated in a primary or secondary melting unit (1). In order to provide an improved method for the recovery of particularly copper from slag, the invention provides that the metal containing slag is heated in a primary or secondary melting unit (1) configured as an AC electric furnace, and the melt is subsequently transferred in a furnace (2) configured as a DC electric furnace by means of the primary or secondary melting unit (1), in which an electrolytic separation of the metal to be extracted is carried out, wherein a reduction agent in the form of calcium silicide (CaSi), calcium carbide (CaC2), ferro silicon (FeSi), aluminum (AI), and/or reduction gases is added to, and/or injected into the primary or secondary melting unit (1).</p> |
